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Finding the Fourth Proportional to 1,049.42, 1,574.81 and 400.16

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Solution

The fourth proportional to 1,049.42, 1,574.81 and 400.16 is: 600.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,049.42 : 1,574.81 = 400.16 : x
  2. Step 2: Convert to fraction form
    1,049.42/1,574.81 = 400.16/x
  3. Step 3: Cross multiply
    1,049.42x = 1,574.81 × 400.16
  4. Step 4: Simplify right side
    1,049.42x = 630,173.97
  5. Step 5: Solve for x
    x = 630,173.97/1,049.42
  6. Step 6: Final answer
    x = 600.50

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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.