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Finding the Fourth Proportional to 913.84, 1,372.04 and 700.08

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Solution

The fourth proportional to 913.84, 1,372.04 and 700.08 is: 1,051.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    913.84 : 1,372.04 = 700.08 : x
  2. Step 2: Convert to fraction form
    913.84/1,372.04 = 700.08/x
  3. Step 3: Cross multiply
    913.84x = 1,372.04 × 700.08
  4. Step 4: Simplify right side
    913.84x = 960,537.76
  5. Step 5: Solve for x
    x = 960,537.76/913.84
  6. Step 6: Final answer
    x = 1,051.10

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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.