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Finding the Fourth Proportional to 910.65, 1,365.96 and 333.39

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Solution

The fourth proportional to 910.65, 1,365.96 and 333.39 is: 500.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    910.65 : 1,365.96 = 333.39 : x
  2. Step 2: Convert to fraction form
    910.65/1,365.96 = 333.39/x
  3. Step 3: Cross multiply
    910.65x = 1,365.96 × 333.39
  4. Step 4: Simplify right side
    910.65x = 455,397.40
  5. Step 5: Solve for x
    x = 455,397.40/910.65
  6. Step 6: Final answer
    x = 500.08

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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.