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Finding the Fourth Proportional to 909.06, 1,254.50 and 495.06

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Solution

The fourth proportional to 909.06, 1,254.50 and 495.06 is: 683.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    909.06 : 1,254.50 = 495.06 : x
  2. Step 2: Convert to fraction form
    909.06/1,254.50 = 495.06/x
  3. Step 3: Cross multiply
    909.06x = 1,254.50 × 495.06
  4. Step 4: Simplify right side
    909.06x = 621,052.77
  5. Step 5: Solve for x
    x = 621,052.77/909.06
  6. Step 6: Final answer
    x = 683.18

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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.