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Finding the Fourth Proportional to 567.45, 848.90 and 491.23

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Solution

The fourth proportional to 567.45, 848.90 and 491.23 is: 734.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    567.45 : 848.90 = 491.23 : x
  2. Step 2: Convert to fraction form
    567.45/848.90 = 491.23/x
  3. Step 3: Cross multiply
    567.45x = 848.90 × 491.23
  4. Step 4: Simplify right side
    567.45x = 417,005.15
  5. Step 5: Solve for x
    x = 417,005.15/567.45
  6. Step 6: Final answer
    x = 734.88

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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.