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Finding the Fourth Proportional to 673.35, 1,009.36 and 240.15

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Solution

The fourth proportional to 673.35, 1,009.36 and 240.15 is: 359.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.35 : 1,009.36 = 240.15 : x
  2. Step 2: Convert to fraction form
    673.35/1,009.36 = 240.15/x
  3. Step 3: Cross multiply
    673.35x = 1,009.36 × 240.15
  4. Step 4: Simplify right side
    673.35x = 242,397.80
  5. Step 5: Solve for x
    x = 242,397.80/673.35
  6. Step 6: Final answer
    x = 359.99

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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.