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Finding the Fourth Proportional to 660.15, 994.76 and 547.13

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Solution

The fourth proportional to 660.15, 994.76 and 547.13 is: 824.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    660.15 : 994.76 = 547.13 : x
  2. Step 2: Convert to fraction form
    660.15/994.76 = 547.13/x
  3. Step 3: Cross multiply
    660.15x = 994.76 × 547.13
  4. Step 4: Simplify right side
    660.15x = 544,263.04
  5. Step 5: Solve for x
    x = 544,263.04/660.15
  6. Step 6: Final answer
    x = 824.45

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.