Home / 909.02-1,364.38-447.13

Finding the Fourth Proportional to 909.02, 1,364.38 and 447.13

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Solution

The fourth proportional to 909.02, 1,364.38 and 447.13 is: 671.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    909.02 : 1,364.38 = 447.13 : x
  2. Step 2: Convert to fraction form
    909.02/1,364.38 = 447.13/x
  3. Step 3: Cross multiply
    909.02x = 1,364.38 × 447.13
  4. Step 4: Simplify right side
    909.02x = 610,057.49
  5. Step 5: Solve for x
    x = 610,057.49/909.02
  6. Step 6: Final answer
    x = 671.12

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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.