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Finding the Fourth Proportional to 1,552.61, 2,328.93 and 512.61

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Solution

The fourth proportional to 1,552.61, 2,328.93 and 512.61 is: 768.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,552.61 : 2,328.93 = 512.61 : x
  2. Step 2: Convert to fraction form
    1,552.61/2,328.93 = 512.61/x
  3. Step 3: Cross multiply
    1,552.61x = 2,328.93 × 512.61
  4. Step 4: Simplify right side
    1,552.61x = 1,193,832.81
  5. Step 5: Solve for x
    x = 1,193,832.81/1,552.61
  6. Step 6: Final answer
    x = 768.92

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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.