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Finding the Fourth Proportional to 673.03, 1,008.73 and 307.45

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Solution

The fourth proportional to 673.03, 1,008.73 and 307.45 is: 460.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.03 : 1,008.73 = 307.45 : x
  2. Step 2: Convert to fraction form
    673.03/1,008.73 = 307.45/x
  3. Step 3: Cross multiply
    673.03x = 1,008.73 × 307.45
  4. Step 4: Simplify right side
    673.03x = 310,127.46
  5. Step 5: Solve for x
    x = 310,127.46/673.03
  6. Step 6: Final answer
    x = 460.80

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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.