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Finding the Fourth Proportional to 717.24, 1,075.08 and 543.36

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Solution

The fourth proportional to 717.24, 1,075.08 and 543.36 is: 814.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    717.24 : 1,075.08 = 543.36 : x
  2. Step 2: Convert to fraction form
    717.24/1,075.08 = 543.36/x
  3. Step 3: Cross multiply
    717.24x = 1,075.08 × 543.36
  4. Step 4: Simplify right side
    717.24x = 584,155.47
  5. Step 5: Solve for x
    x = 584,155.47/717.24
  6. Step 6: Final answer
    x = 814.45

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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.