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Finding the Fourth Proportional to 710.01, 1,065.03 and 432.42

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Solution

The fourth proportional to 710.01, 1,065.03 and 432.42 is: 648.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.01 : 1,065.03 = 432.42 : x
  2. Step 2: Convert to fraction form
    710.01/1,065.03 = 432.42/x
  3. Step 3: Cross multiply
    710.01x = 1,065.03 × 432.42
  4. Step 4: Simplify right side
    710.01x = 460,540.27
  5. Step 5: Solve for x
    x = 460,540.27/710.01
  6. Step 6: Final answer
    x = 648.64

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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.