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Finding the Fourth Proportional to 602.75, 831.86 and 340.72

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Solution

The fourth proportional to 602.75, 831.86 and 340.72 is: 470.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.75 : 831.86 = 340.72 : x
  2. Step 2: Convert to fraction form
    602.75/831.86 = 340.72/x
  3. Step 3: Cross multiply
    602.75x = 831.86 × 340.72
  4. Step 4: Simplify right side
    602.75x = 283,431.34
  5. Step 5: Solve for x
    x = 283,431.34/602.75
  6. Step 6: Final answer
    x = 470.23

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Find fourth proportional to 301.38, 415.93 and 170.36
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1.5x scale

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.