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Finding the Fourth Proportional to 730.80, 1,007.10 and 565.02

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Solution

The fourth proportional to 730.80, 1,007.10 and 565.02 is: 778.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.80 : 1,007.10 = 565.02 : x
  2. Step 2: Convert to fraction form
    730.80/1,007.10 = 565.02/x
  3. Step 3: Cross multiply
    730.80x = 1,007.10 × 565.02
  4. Step 4: Simplify right side
    730.80x = 569,031.64
  5. Step 5: Solve for x
    x = 569,031.64/730.80
  6. Step 6: Final answer
    x = 778.64

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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.