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Finding the Fourth Proportional to 1,347.08, 2,020.62 and 616.64

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Solution

The fourth proportional to 1,347.08, 2,020.62 and 616.64 is: 924.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347.08 : 2,020.62 = 616.64 : x
  2. Step 2: Convert to fraction form
    1,347.08/2,020.62 = 616.64/x
  3. Step 3: Cross multiply
    1,347.08x = 2,020.62 × 616.64
  4. Step 4: Simplify right side
    1,347.08x = 1,245,995.12
  5. Step 5: Solve for x
    x = 1,245,995.12/1,347.08
  6. Step 6: Final answer
    x = 924.96

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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.