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Finding the Fourth Proportional to 673.29, 1,009.94 and 307.89

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Solution

The fourth proportional to 673.29, 1,009.94 and 307.89 is: 461.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.29 : 1,009.94 = 307.89 : x
  2. Step 2: Convert to fraction form
    673.29/1,009.94 = 307.89/x
  3. Step 3: Cross multiply
    673.29x = 1,009.94 × 307.89
  4. Step 4: Simplify right side
    673.29x = 310,948.89
  5. Step 5: Solve for x
    x = 310,948.89/673.29
  6. Step 6: Final answer
    x = 461.84

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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.