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Finding the Fourth Proportional to 1,165.67, 1,748.50 and 435.30

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Solution

The fourth proportional to 1,165.67, 1,748.50 and 435.30 is: 652.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,165.67 : 1,748.50 = 435.30 : x
  2. Step 2: Convert to fraction form
    1,165.67/1,748.50 = 435.30/x
  3. Step 3: Cross multiply
    1,165.67x = 1,748.50 × 435.30
  4. Step 4: Simplify right side
    1,165.67x = 761,122.05
  5. Step 5: Solve for x
    x = 761,122.05/1,165.67
  6. Step 6: Final answer
    x = 652.95

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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.