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Finding the Fourth Proportional to 588.72, 812.01 and 431.40

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Solution

The fourth proportional to 588.72, 812.01 and 431.40 is: 595.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    588.72 : 812.01 = 431.40 : x
  2. Step 2: Convert to fraction form
    588.72/812.01 = 431.40/x
  3. Step 3: Cross multiply
    588.72x = 812.01 × 431.40
  4. Step 4: Simplify right side
    588.72x = 350,301.11
  5. Step 5: Solve for x
    x = 350,301.11/588.72
  6. Step 6: Final answer
    x = 595.02

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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.