Home / 740.16-1,108.08-547.20

Finding the Fourth Proportional to 740.16, 1,108.08 and 547.20

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Solution

The fourth proportional to 740.16, 1,108.08 and 547.20 is: 819.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    740.16 : 1,108.08 = 547.20 : x
  2. Step 2: Convert to fraction form
    740.16/1,108.08 = 547.20/x
  3. Step 3: Cross multiply
    740.16x = 1,108.08 × 547.20
  4. Step 4: Simplify right side
    740.16x = 606,341.38
  5. Step 5: Solve for x
    x = 606,341.38/740.16
  6. Step 6: Final answer
    x = 819.20

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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.