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Finding the Fourth Proportional to 614.96, 916.96 and 607.40

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Solution

The fourth proportional to 614.96, 916.96 and 607.40 is: 905.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.96 : 916.96 = 607.40 : x
  2. Step 2: Convert to fraction form
    614.96/916.96 = 607.40/x
  3. Step 3: Cross multiply
    614.96x = 916.96 × 607.40
  4. Step 4: Simplify right side
    614.96x = 556,961.50
  5. Step 5: Solve for x
    x = 556,961.50/614.96
  6. Step 6: Final answer
    x = 905.69

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.