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Finding the Fourth Proportional to 621.08, 930.18 and 585.08

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Solution

The fourth proportional to 621.08, 930.18 and 585.08 is: 876.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.08 : 930.18 = 585.08 : x
  2. Step 2: Convert to fraction form
    621.08/930.18 = 585.08/x
  3. Step 3: Cross multiply
    621.08x = 930.18 × 585.08
  4. Step 4: Simplify right side
    621.08x = 544,229.71
  5. Step 5: Solve for x
    x = 544,229.71/621.08
  6. Step 6: Final answer
    x = 876.26

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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.