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Finding the Fourth Proportional to 621.36, 932.02 and 580.35

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Solution

The fourth proportional to 621.36, 932.02 and 580.35 is: 870.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.36 : 932.02 = 580.35 : x
  2. Step 2: Convert to fraction form
    621.36/932.02 = 580.35/x
  3. Step 3: Cross multiply
    621.36x = 932.02 × 580.35
  4. Step 4: Simplify right side
    621.36x = 540,897.81
  5. Step 5: Solve for x
    x = 540,897.81/621.36
  6. Step 6: Final answer
    x = 870.51

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Double scale
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1.5x scale

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.