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Finding the Fourth Proportional to 555.46, 832.51 and 418.06

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Solution

The fourth proportional to 555.46, 832.51 and 418.06 is: 626.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.46 : 832.51 = 418.06 : x
  2. Step 2: Convert to fraction form
    555.46/832.51 = 418.06/x
  3. Step 3: Cross multiply
    555.46x = 832.51 × 418.06
  4. Step 4: Simplify right side
    555.46x = 348,040.69
  5. Step 5: Solve for x
    x = 348,040.69/555.46
  6. Step 6: Final answer
    x = 626.58

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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.