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Finding the Fourth Proportional to 556.01, 832.47 and 280.76

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Solution

The fourth proportional to 556.01, 832.47 and 280.76 is: 420.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.01 : 832.47 = 280.76 : x
  2. Step 2: Convert to fraction form
    556.01/832.47 = 280.76/x
  3. Step 3: Cross multiply
    556.01x = 832.47 × 280.76
  4. Step 4: Simplify right side
    556.01x = 233,720.82
  5. Step 5: Solve for x
    x = 233,720.82/556.01
  6. Step 6: Final answer
    x = 420.36

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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.