Home / 1,528.32-2,292.45-432.74

Finding the Fourth Proportional to 1,528.32, 2,292.45 and 432.74

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Solution

The fourth proportional to 1,528.32, 2,292.45 and 432.74 is: 649.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,528.32 : 2,292.45 = 432.74 : x
  2. Step 2: Convert to fraction form
    1,528.32/2,292.45 = 432.74/x
  3. Step 3: Cross multiply
    1,528.32x = 2,292.45 × 432.74
  4. Step 4: Simplify right side
    1,528.32x = 992,041.36
  5. Step 5: Solve for x
    x = 992,041.36/1,528.32
  6. Step 6: Final answer
    x = 649.11

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Half scale
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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.