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Finding the Fourth Proportional to 432.91, 597.65 and 285.80

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Solution

The fourth proportional to 432.91, 597.65 and 285.80 is: 394.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    432.91 : 597.65 = 285.80 : x
  2. Step 2: Convert to fraction form
    432.91/597.65 = 285.80/x
  3. Step 3: Cross multiply
    432.91x = 597.65 × 285.80
  4. Step 4: Simplify right side
    432.91x = 170,803.95
  5. Step 5: Solve for x
    x = 170,803.95/432.91
  6. Step 6: Final answer
    x = 394.55

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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.