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Finding the Fourth Proportional to 957.10, 1,320.68 and 537.48

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Solution

The fourth proportional to 957.10, 1,320.68 and 537.48 is: 741.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    957.10 : 1,320.68 = 537.48 : x
  2. Step 2: Convert to fraction form
    957.10/1,320.68 = 537.48/x
  3. Step 3: Cross multiply
    957.10x = 1,320.68 × 537.48
  4. Step 4: Simplify right side
    957.10x = 709,839.09
  5. Step 5: Solve for x
    x = 709,839.09/957.10
  6. Step 6: Final answer
    x = 741.66

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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.