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Finding the Fourth Proportional to 768, 1,059.18 and 473.07

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Solution

The fourth proportional to 768, 1,059.18 and 473.07 is: 652.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    768 : 1,059.18 = 473.07 : x
  2. Step 2: Convert to fraction form
    768/1,059.18 = 473.07/x
  3. Step 3: Cross multiply
    768x = 1,059.18 × 473.07
  4. Step 4: Simplify right side
    768x = 501,066.28
  5. Step 5: Solve for x
    x = 501,066.28/768
  6. Step 6: Final answer
    x = 652.43

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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.