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Finding the Fourth Proportional to 626.81, 864.14 and 417.00

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Solution

The fourth proportional to 626.81, 864.14 and 417.00 is: 574.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.81 : 864.14 = 417.00 : x
  2. Step 2: Convert to fraction form
    626.81/864.14 = 417.00/x
  3. Step 3: Cross multiply
    626.81x = 864.14 × 417.00
  4. Step 4: Simplify right side
    626.81x = 360,342.67
  5. Step 5: Solve for x
    x = 360,342.67/626.81
  6. Step 6: Final answer
    x = 574.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.