Home / 1,043.28-1,565.07-427.08

Finding the Fourth Proportional to 1,043.28, 1,565.07 and 427.08

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Solution

The fourth proportional to 1,043.28, 1,565.07 and 427.08 is: 640.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,043.28 : 1,565.07 = 427.08 : x
  2. Step 2: Convert to fraction form
    1,043.28/1,565.07 = 427.08/x
  3. Step 3: Cross multiply
    1,043.28x = 1,565.07 × 427.08
  4. Step 4: Simplify right side
    1,043.28x = 668,402.27
  5. Step 5: Solve for x
    x = 668,402.27/1,043.28
  6. Step 6: Final answer
    x = 640.67

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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.