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Finding the Fourth Proportional to 633.07, 874.46 and 487.51

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Solution

The fourth proportional to 633.07, 874.46 and 487.51 is: 673.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.07 : 874.46 = 487.51 : x
  2. Step 2: Convert to fraction form
    633.07/874.46 = 487.51/x
  3. Step 3: Cross multiply
    633.07x = 874.46 × 487.51
  4. Step 4: Simplify right side
    633.07x = 426,307.99
  5. Step 5: Solve for x
    x = 426,307.99/633.07
  6. Step 6: Final answer
    x = 673.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.