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Finding the Fourth Proportional to 896.40, 1,237.20 and 547.08

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Solution

The fourth proportional to 896.40, 1,237.20 and 547.08 is: 755.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    896.40 : 1,237.20 = 547.08 : x
  2. Step 2: Convert to fraction form
    896.40/1,237.20 = 547.08/x
  3. Step 3: Cross multiply
    896.40x = 1,237.20 × 547.08
  4. Step 4: Simplify right side
    896.40x = 676,847.38
  5. Step 5: Solve for x
    x = 676,847.38/896.40
  6. Step 6: Final answer
    x = 755.07

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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.