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Finding the Fourth Proportional to 1,047.80, 1,446.36 and 654.92

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Solution

The fourth proportional to 1,047.80, 1,446.36 and 654.92 is: 904.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,047.80 : 1,446.36 = 654.92 : x
  2. Step 2: Convert to fraction form
    1,047.80/1,446.36 = 654.92/x
  3. Step 3: Cross multiply
    1,047.80x = 1,446.36 × 654.92
  4. Step 4: Simplify right side
    1,047.80x = 947,250.09
  5. Step 5: Solve for x
    x = 947,250.09/1,047.80
  6. Step 6: Final answer
    x = 904.04

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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.