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Finding the Fourth Proportional to 918.75, 1,377.30 and 333.62

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Solution

The fourth proportional to 918.75, 1,377.30 and 333.62 is: 500.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    918.75 : 1,377.30 = 333.62 : x
  2. Step 2: Convert to fraction form
    918.75/1,377.30 = 333.62/x
  3. Step 3: Cross multiply
    918.75x = 1,377.30 × 333.62
  4. Step 4: Simplify right side
    918.75x = 459,494.83
  5. Step 5: Solve for x
    x = 459,494.83/918.75
  6. Step 6: Final answer
    x = 500.13

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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.