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Finding the Fourth Proportional to 588.79, 812.60 and 340.18

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Solution

The fourth proportional to 588.79, 812.60 and 340.18 is: 469.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    588.79 : 812.60 = 340.18 : x
  2. Step 2: Convert to fraction form
    588.79/812.60 = 340.18/x
  3. Step 3: Cross multiply
    588.79x = 812.60 × 340.18
  4. Step 4: Simplify right side
    588.79x = 276,427.81
  5. Step 5: Solve for x
    x = 276,427.81/588.79
  6. Step 6: Final answer
    x = 469.48

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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.