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Finding the Fourth Proportional to 616.24, 849.60 and 528.72

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Solution

The fourth proportional to 616.24, 849.60 and 528.72 is: 728.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.24 : 849.60 = 528.72 : x
  2. Step 2: Convert to fraction form
    616.24/849.60 = 528.72/x
  3. Step 3: Cross multiply
    616.24x = 849.60 × 528.72
  4. Step 4: Simplify right side
    616.24x = 449,200.51
  5. Step 5: Solve for x
    x = 449,200.51/616.24
  6. Step 6: Final answer
    x = 728.94

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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.