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Finding the Fourth Proportional to 1,349.19, 1,862.20 and 901.08

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Solution

The fourth proportional to 1,349.19, 1,862.20 and 901.08 is: 1,243.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,349.19 : 1,862.20 = 901.08 : x
  2. Step 2: Convert to fraction form
    1,349.19/1,862.20 = 901.08/x
  3. Step 3: Cross multiply
    1,349.19x = 1,862.20 × 901.08
  4. Step 4: Simplify right side
    1,349.19x = 1,677,991.18
  5. Step 5: Solve for x
    x = 1,677,991.18/1,349.19
  6. Step 6: Final answer
    x = 1,243.70

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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.