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Finding the Fourth Proportional to 1,207.56, 1,666.23 and 703.52

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Solution

The fourth proportional to 1,207.56, 1,666.23 and 703.52 is: 970.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207.56 : 1,666.23 = 703.52 : x
  2. Step 2: Convert to fraction form
    1,207.56/1,666.23 = 703.52/x
  3. Step 3: Cross multiply
    1,207.56x = 1,666.23 × 703.52
  4. Step 4: Simplify right side
    1,207.56x = 1,172,226.13
  5. Step 5: Solve for x
    x = 1,172,226.13/1,207.56
  6. Step 6: Final answer
    x = 970.74

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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.