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Finding the Fourth Proportional to 957.02, 1,320.45 and 537.38

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Solution

The fourth proportional to 957.02, 1,320.45 and 537.38 is: 741.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    957.02 : 1,320.45 = 537.38 : x
  2. Step 2: Convert to fraction form
    957.02/1,320.45 = 537.38/x
  3. Step 3: Cross multiply
    957.02x = 1,320.45 × 537.38
  4. Step 4: Simplify right side
    957.02x = 709,584.71
  5. Step 5: Solve for x
    x = 709,584.71/957.02
  6. Step 6: Final answer
    x = 741.45

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1.5x scale

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.