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Finding the Fourth Proportional to 616.72, 919.73 and 526

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Solution

The fourth proportional to 616.72, 919.73 and 526 is: 784.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.72 : 919.73 = 526 : x
  2. Step 2: Convert to fraction form
    616.72/919.73 = 526/x
  3. Step 3: Cross multiply
    616.72x = 919.73 × 526
  4. Step 4: Simplify right side
    616.72x = 483,777.98
  5. Step 5: Solve for x
    x = 483,777.98/616.72
  6. Step 6: Final answer
    x = 784.44

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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.