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Finding the Fourth Proportional to 624.76, 862.22 and 348.76

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Solution

The fourth proportional to 624.76, 862.22 and 348.76 is: 481.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.76 : 862.22 = 348.76 : x
  2. Step 2: Convert to fraction form
    624.76/862.22 = 348.76/x
  3. Step 3: Cross multiply
    624.76x = 862.22 × 348.76
  4. Step 4: Simplify right side
    624.76x = 300,707.85
  5. Step 5: Solve for x
    x = 300,707.85/624.76
  6. Step 6: Final answer
    x = 481.32

Related Problems

Find fourth proportional to 312.38, 431.11 and 174.38
Half scale
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Double scale
Find fourth proportional to 625.76, 863.60 and 349.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.