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Finding the Fourth Proportional to 867.47, 1,195.70 and 535.16

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Solution

The fourth proportional to 867.47, 1,195.70 and 535.16 is: 737.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    867.47 : 1,195.70 = 535.16 : x
  2. Step 2: Convert to fraction form
    867.47/1,195.70 = 535.16/x
  3. Step 3: Cross multiply
    867.47x = 1,195.70 × 535.16
  4. Step 4: Simplify right side
    867.47x = 639,891.13
  5. Step 5: Solve for x
    x = 639,891.13/867.47
  6. Step 6: Final answer
    x = 737.66

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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.