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Finding the Fourth Proportional to 914.33, 1,263.45 and 651.89

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Solution

The fourth proportional to 914.33, 1,263.45 and 651.89 is: 900.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    914.33 : 1,263.45 = 651.89 : x
  2. Step 2: Convert to fraction form
    914.33/1,263.45 = 651.89/x
  3. Step 3: Cross multiply
    914.33x = 1,263.45 × 651.89
  4. Step 4: Simplify right side
    914.33x = 823,630.42
  5. Step 5: Solve for x
    x = 823,630.42/914.33
  6. Step 6: Final answer
    x = 900.80

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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.