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Finding the Fourth Proportional to 1,525.49, 2,288.28 and 485.48

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Solution

The fourth proportional to 1,525.49, 2,288.28 and 485.48 is: 728.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,525.49 : 2,288.28 = 485.48 : x
  2. Step 2: Convert to fraction form
    1,525.49/2,288.28 = 485.48/x
  3. Step 3: Cross multiply
    1,525.49x = 2,288.28 × 485.48
  4. Step 4: Simplify right side
    1,525.49x = 1,110,900.31
  5. Step 5: Solve for x
    x = 1,110,900.31/1,525.49
  6. Step 6: Final answer
    x = 728.23

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Double scale
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1.5x scale

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.