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Finding the Fourth Proportional to 1,485.13, 2,049.07 and 925.69

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Solution

The fourth proportional to 1,485.13, 2,049.07 and 925.69 is: 1,277.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.13 : 2,049.07 = 925.69 : x
  2. Step 2: Convert to fraction form
    1,485.13/2,049.07 = 925.69/x
  3. Step 3: Cross multiply
    1,485.13x = 2,049.07 × 925.69
  4. Step 4: Simplify right side
    1,485.13x = 1,896,803.61
  5. Step 5: Solve for x
    x = 1,896,803.61/1,485.13
  6. Step 6: Final answer
    x = 1,277.20

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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.