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Finding the Fourth Proportional to 1,458.30, 2,012.37 and 898.80

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Solution

The fourth proportional to 1,458.30, 2,012.37 and 898.80 is: 1,240.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,458.30 : 2,012.37 = 898.80 : x
  2. Step 2: Convert to fraction form
    1,458.30/2,012.37 = 898.80/x
  3. Step 3: Cross multiply
    1,458.30x = 2,012.37 × 898.80
  4. Step 4: Simplify right side
    1,458.30x = 1,808,718.16
  5. Step 5: Solve for x
    x = 1,808,718.16/1,458.30
  6. Step 6: Final answer
    x = 1,240.29

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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.