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Finding the Fourth Proportional to 466.07, 643.14 and 266.90

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Solution

The fourth proportional to 466.07, 643.14 and 266.90 is: 368.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    466.07 : 643.14 = 266.90 : x
  2. Step 2: Convert to fraction form
    466.07/643.14 = 266.90/x
  3. Step 3: Cross multiply
    466.07x = 643.14 × 266.90
  4. Step 4: Simplify right side
    466.07x = 171,650.85
  5. Step 5: Solve for x
    x = 171,650.85/466.07
  6. Step 6: Final answer
    x = 368.30

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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.