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Finding the Fourth Proportional to 1,088.95, 1,502.71 and 616.84

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Solution

The fourth proportional to 1,088.95, 1,502.71 and 616.84 is: 851.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,088.95 : 1,502.71 = 616.84 : x
  2. Step 2: Convert to fraction form
    1,088.95/1,502.71 = 616.84/x
  3. Step 3: Cross multiply
    1,088.95x = 1,502.71 × 616.84
  4. Step 4: Simplify right side
    1,088.95x = 926,925.84
  5. Step 5: Solve for x
    x = 926,925.84/1,088.95
  6. Step 6: Final answer
    x = 851.21

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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.