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Finding the Fourth Proportional to 458.34, 631.66 and 325.56

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Solution

The fourth proportional to 458.34, 631.66 and 325.56 is: 448.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    458.34 : 631.66 = 325.56 : x
  2. Step 2: Convert to fraction form
    458.34/631.66 = 325.56/x
  3. Step 3: Cross multiply
    458.34x = 631.66 × 325.56
  4. Step 4: Simplify right side
    458.34x = 205,642.11
  5. Step 5: Solve for x
    x = 205,642.11/458.34
  6. Step 6: Final answer
    x = 448.67

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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.