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Finding the Fourth Proportional to 623.76, 939.08 and 566.64

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Solution

The fourth proportional to 623.76, 939.08 and 566.64 is: 853.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.76 : 939.08 = 566.64 : x
  2. Step 2: Convert to fraction form
    623.76/939.08 = 566.64/x
  3. Step 3: Cross multiply
    623.76x = 939.08 × 566.64
  4. Step 4: Simplify right side
    623.76x = 532,120.29
  5. Step 5: Solve for x
    x = 532,120.29/623.76
  6. Step 6: Final answer
    x = 853.08

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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.