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Finding the Fourth Proportional to 1,712.16, 2,569.20 and 846.72

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Solution

The fourth proportional to 1,712.16, 2,569.20 and 846.72 is: 1,270.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,712.16 : 2,569.20 = 846.72 : x
  2. Step 2: Convert to fraction form
    1,712.16/2,569.20 = 846.72/x
  3. Step 3: Cross multiply
    1,712.16x = 2,569.20 × 846.72
  4. Step 4: Simplify right side
    1,712.16x = 2,175,393.02
  5. Step 5: Solve for x
    x = 2,175,393.02/1,712.16
  6. Step 6: Final answer
    x = 1,270.55

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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.