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Finding the Fourth Proportional to 618.75, 932.85 and 585

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Solution

The fourth proportional to 618.75, 932.85 and 585 is: 881.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.75 : 932.85 = 585 : x
  2. Step 2: Convert to fraction form
    618.75/932.85 = 585/x
  3. Step 3: Cross multiply
    618.75x = 932.85 × 585
  4. Step 4: Simplify right side
    618.75x = 545,717.25
  5. Step 5: Solve for x
    x = 545,717.25/618.75
  6. Step 6: Final answer
    x = 881.97

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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.