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Finding the Fourth Proportional to 624.68, 862.18 and 362.76

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Solution

The fourth proportional to 624.68, 862.18 and 362.76 is: 500.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.68 : 862.18 = 362.76 : x
  2. Step 2: Convert to fraction form
    624.68/862.18 = 362.76/x
  3. Step 3: Cross multiply
    624.68x = 862.18 × 362.76
  4. Step 4: Simplify right side
    624.68x = 312,764.42
  5. Step 5: Solve for x
    x = 312,764.42/624.68
  6. Step 6: Final answer
    x = 500.68

Related Problems

Find fourth proportional to 312.34, 431.09 and 181.38
Half scale
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Double scale
Find fourth proportional to 625.68, 863.56 and 363.76
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.