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Finding the Fourth Proportional to 616.22, 918.99 and 525.50

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Solution

The fourth proportional to 616.22, 918.99 and 525.50 is: 783.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.22 : 918.99 = 525.50 : x
  2. Step 2: Convert to fraction form
    616.22/918.99 = 525.50/x
  3. Step 3: Cross multiply
    616.22x = 918.99 × 525.50
  4. Step 4: Simplify right side
    616.22x = 482,926.62
  5. Step 5: Solve for x
    x = 482,926.62/616.22
  6. Step 6: Final answer
    x = 783.69

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1.5x scale

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.