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Finding the Fourth Proportional to 1,035.36, 1,554.12 and 458.64

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Solution

The fourth proportional to 1,035.36, 1,554.12 and 458.64 is: 688.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,035.36 : 1,554.12 = 458.64 : x
  2. Step 2: Convert to fraction form
    1,035.36/1,554.12 = 458.64/x
  3. Step 3: Cross multiply
    1,035.36x = 1,554.12 × 458.64
  4. Step 4: Simplify right side
    1,035.36x = 712,781.60
  5. Step 5: Solve for x
    x = 712,781.60/1,035.36
  6. Step 6: Final answer
    x = 688.44

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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.