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Finding the Fourth Proportional to 624.76, 862.52 and 415.22

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Solution

The fourth proportional to 624.76, 862.52 and 415.22 is: 573.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.76 : 862.52 = 415.22 : x
  2. Step 2: Convert to fraction form
    624.76/862.52 = 415.22/x
  3. Step 3: Cross multiply
    624.76x = 862.52 × 415.22
  4. Step 4: Simplify right side
    624.76x = 358,134.02
  5. Step 5: Solve for x
    x = 358,134.02/624.76
  6. Step 6: Final answer
    x = 573.24

Related Problems

Find fourth proportional to 312.38, 431.26 and 207.61
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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.