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Finding the Fourth Proportional to 864.04, 1,192.38 and 514.66

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Solution

The fourth proportional to 864.04, 1,192.38 and 514.66 is: 710.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    864.04 : 1,192.38 = 514.66 : x
  2. Step 2: Convert to fraction form
    864.04/1,192.38 = 514.66/x
  3. Step 3: Cross multiply
    864.04x = 1,192.38 × 514.66
  4. Step 4: Simplify right side
    864.04x = 613,670.29
  5. Step 5: Solve for x
    x = 613,670.29/864.04
  6. Step 6: Final answer
    x = 710.23

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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.