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Finding the Fourth Proportional to 1,373.68, 2,060.56 and 400

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Solution

The fourth proportional to 1,373.68, 2,060.56 and 400 is: 600.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,373.68 : 2,060.56 = 400 : x
  2. Step 2: Convert to fraction form
    1,373.68/2,060.56 = 400/x
  3. Step 3: Cross multiply
    1,373.68x = 2,060.56 × 400
  4. Step 4: Simplify right side
    1,373.68x = 824,224
  5. Step 5: Solve for x
    x = 824,224/1,373.68
  6. Step 6: Final answer
    x = 600.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.