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Finding the Fourth Proportional to 624.77, 861.45 and 432.66

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Solution

The fourth proportional to 624.77, 861.45 and 432.66 is: 596.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.77 : 861.45 = 432.66 : x
  2. Step 2: Convert to fraction form
    624.77/861.45 = 432.66/x
  3. Step 3: Cross multiply
    624.77x = 861.45 × 432.66
  4. Step 4: Simplify right side
    624.77x = 372,714.96
  5. Step 5: Solve for x
    x = 372,714.96/624.77
  6. Step 6: Final answer
    x = 596.57

Related Problems

Find fourth proportional to 312.38, 430.73 and 216.33
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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.