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Finding the Fourth Proportional to 1,147.66, 1,719.19 and 530.53

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Solution

The fourth proportional to 1,147.66, 1,719.19 and 530.53 is: 794.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147.66 : 1,719.19 = 530.53 : x
  2. Step 2: Convert to fraction form
    1,147.66/1,719.19 = 530.53/x
  3. Step 3: Cross multiply
    1,147.66x = 1,719.19 × 530.53
  4. Step 4: Simplify right side
    1,147.66x = 912,078.24
  5. Step 5: Solve for x
    x = 912,078.24/1,147.66
  6. Step 6: Final answer
    x = 794.73

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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.