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Finding the Fourth Proportional to 1,154.34, 1,731.33 and 384.84

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Solution

The fourth proportional to 1,154.34, 1,731.33 and 384.84 is: 577.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,154.34 : 1,731.33 = 384.84 : x
  2. Step 2: Convert to fraction form
    1,154.34/1,731.33 = 384.84/x
  3. Step 3: Cross multiply
    1,154.34x = 1,731.33 × 384.84
  4. Step 4: Simplify right side
    1,154.34x = 666,285.04
  5. Step 5: Solve for x
    x = 666,285.04/1,154.34
  6. Step 6: Final answer
    x = 577.20

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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.