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Finding the Fourth Proportional to 591.78, 886.10 and 435.96

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Solution

The fourth proportional to 591.78, 886.10 and 435.96 is: 652.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.78 : 886.10 = 435.96 : x
  2. Step 2: Convert to fraction form
    591.78/886.10 = 435.96/x
  3. Step 3: Cross multiply
    591.78x = 886.10 × 435.96
  4. Step 4: Simplify right side
    591.78x = 386,304.16
  5. Step 5: Solve for x
    x = 386,304.16/591.78
  6. Step 6: Final answer
    x = 652.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.