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Finding the Fourth Proportional to 673.36, 1,009.86 and 240.48

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Solution

The fourth proportional to 673.36, 1,009.86 and 240.48 is: 360.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.36 : 1,009.86 = 240.48 : x
  2. Step 2: Convert to fraction form
    673.36/1,009.86 = 240.48/x
  3. Step 3: Cross multiply
    673.36x = 1,009.86 × 240.48
  4. Step 4: Simplify right side
    673.36x = 242,851.13
  5. Step 5: Solve for x
    x = 242,851.13/673.36
  6. Step 6: Final answer
    x = 360.66

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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.