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Finding the Fourth Proportional to 1,035.58, 1,552.28 and 521.50

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Solution

The fourth proportional to 1,035.58, 1,552.28 and 521.50 is: 781.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,035.58 : 1,552.28 = 521.50 : x
  2. Step 2: Convert to fraction form
    1,035.58/1,552.28 = 521.50/x
  3. Step 3: Cross multiply
    1,035.58x = 1,552.28 × 521.50
  4. Step 4: Simplify right side
    1,035.58x = 809,514.02
  5. Step 5: Solve for x
    x = 809,514.02/1,035.58
  6. Step 6: Final answer
    x = 781.70

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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.