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Finding the Fourth Proportional to 325.90, 486.53 and 314.51

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Solution

The fourth proportional to 325.90, 486.53 and 314.51 is: 469.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.90 : 486.53 = 314.51 : x
  2. Step 2: Convert to fraction form
    325.90/486.53 = 314.51/x
  3. Step 3: Cross multiply
    325.90x = 486.53 × 314.51
  4. Step 4: Simplify right side
    325.90x = 153,018.55
  5. Step 5: Solve for x
    x = 153,018.55/325.90
  6. Step 6: Final answer
    x = 469.53

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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.