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Finding the Fourth Proportional to 1,029.97, 1,417.71 and 898.75

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Solution

The fourth proportional to 1,029.97, 1,417.71 and 898.75 is: 1,237.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,029.97 : 1,417.71 = 898.75 : x
  2. Step 2: Convert to fraction form
    1,029.97/1,417.71 = 898.75/x
  3. Step 3: Cross multiply
    1,029.97x = 1,417.71 × 898.75
  4. Step 4: Simplify right side
    1,029.97x = 1,274,166.86
  5. Step 5: Solve for x
    x = 1,274,166.86/1,029.97
  6. Step 6: Final answer
    x = 1,237.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.