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Finding the Fourth Proportional to 817.32, 1,127.58 and 537.66

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Solution

The fourth proportional to 817.32, 1,127.58 and 537.66 is: 741.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    817.32 : 1,127.58 = 537.66 : x
  2. Step 2: Convert to fraction form
    817.32/1,127.58 = 537.66/x
  3. Step 3: Cross multiply
    817.32x = 1,127.58 × 537.66
  4. Step 4: Simplify right side
    817.32x = 606,254.66
  5. Step 5: Solve for x
    x = 606,254.66/817.32
  6. Step 6: Final answer
    x = 741.76

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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.