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Finding the Fourth Proportional to 710.84, 1,065.62 and 277.89

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Solution

The fourth proportional to 710.84, 1,065.62 and 277.89 is: 416.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.84 : 1,065.62 = 277.89 : x
  2. Step 2: Convert to fraction form
    710.84/1,065.62 = 277.89/x
  3. Step 3: Cross multiply
    710.84x = 1,065.62 × 277.89
  4. Step 4: Simplify right side
    710.84x = 296,123.75
  5. Step 5: Solve for x
    x = 296,123.75/710.84
  6. Step 6: Final answer
    x = 416.59

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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.