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Finding the Fourth Proportional to 1,065.48, 1,595.64 and 881.52

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Solution

The fourth proportional to 1,065.48, 1,595.64 and 881.52 is: 1,320.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,065.48 : 1,595.64 = 881.52 : x
  2. Step 2: Convert to fraction form
    1,065.48/1,595.64 = 881.52/x
  3. Step 3: Cross multiply
    1,065.48x = 1,595.64 × 881.52
  4. Step 4: Simplify right side
    1,065.48x = 1,406,588.57
  5. Step 5: Solve for x
    x = 1,406,588.57/1,065.48
  6. Step 6: Final answer
    x = 1,320.15

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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.