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Finding the Fourth Proportional to 1,176.39, 1,623.40 and 652.43

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Solution

The fourth proportional to 1,176.39, 1,623.40 and 652.43 is: 900.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,176.39 : 1,623.40 = 652.43 : x
  2. Step 2: Convert to fraction form
    1,176.39/1,623.40 = 652.43/x
  3. Step 3: Cross multiply
    1,176.39x = 1,623.40 × 652.43
  4. Step 4: Simplify right side
    1,176.39x = 1,059,154.86
  5. Step 5: Solve for x
    x = 1,059,154.86/1,176.39
  6. Step 6: Final answer
    x = 900.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.