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Finding the Fourth Proportional to 950.15, 1,311.17 and 530.49

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Solution

The fourth proportional to 950.15, 1,311.17 and 530.49 is: 732.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    950.15 : 1,311.17 = 530.49 : x
  2. Step 2: Convert to fraction form
    950.15/1,311.17 = 530.49/x
  3. Step 3: Cross multiply
    950.15x = 1,311.17 × 530.49
  4. Step 4: Simplify right side
    950.15x = 695,564.84
  5. Step 5: Solve for x
    x = 695,564.84/950.15
  6. Step 6: Final answer
    x = 732.06

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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.