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Finding the Fourth Proportional to 624.46, 861.50 and 414.76

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Solution

The fourth proportional to 624.46, 861.50 and 414.76 is: 572.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.46 : 861.50 = 414.76 : x
  2. Step 2: Convert to fraction form
    624.46/861.50 = 414.76/x
  3. Step 3: Cross multiply
    624.46x = 861.50 × 414.76
  4. Step 4: Simplify right side
    624.46x = 357,315.74
  5. Step 5: Solve for x
    x = 357,315.74/624.46
  6. Step 6: Final answer
    x = 572.20

Related Problems

Find fourth proportional to 312.23, 430.75 and 207.38
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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.