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Finding the Fourth Proportional to 613.28, 919.08 and 598.16

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Solution

The fourth proportional to 613.28, 919.08 and 598.16 is: 896.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.28 : 919.08 = 598.16 : x
  2. Step 2: Convert to fraction form
    613.28/919.08 = 598.16/x
  3. Step 3: Cross multiply
    613.28x = 919.08 × 598.16
  4. Step 4: Simplify right side
    613.28x = 549,756.89
  5. Step 5: Solve for x
    x = 549,756.89/613.28
  6. Step 6: Final answer
    x = 896.42

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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.