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Finding the Fourth Proportional to 740.16, 1,108.80 and 534.24

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Solution

The fourth proportional to 740.16, 1,108.80 and 534.24 is: 800.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    740.16 : 1,108.80 = 534.24 : x
  2. Step 2: Convert to fraction form
    740.16/1,108.80 = 534.24/x
  3. Step 3: Cross multiply
    740.16x = 1,108.80 × 534.24
  4. Step 4: Simplify right side
    740.16x = 592,365.31
  5. Step 5: Solve for x
    x = 592,365.31/740.16
  6. Step 6: Final answer
    x = 800.32

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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.