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Finding the Fourth Proportional to 1,337.39, 1,844.18 and 918.35

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Solution

The fourth proportional to 1,337.39, 1,844.18 and 918.35 is: 1,266.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,337.39 : 1,844.18 = 918.35 : x
  2. Step 2: Convert to fraction form
    1,337.39/1,844.18 = 918.35/x
  3. Step 3: Cross multiply
    1,337.39x = 1,844.18 × 918.35
  4. Step 4: Simplify right side
    1,337.39x = 1,693,599.25
  5. Step 5: Solve for x
    x = 1,693,599.25/1,337.39
  6. Step 6: Final answer
    x = 1,266.35

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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.