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Finding the Fourth Proportional to 602.76, 831.37 and 381.50

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Solution

The fourth proportional to 602.76, 831.37 and 381.50 is: 526.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.76 : 831.37 = 381.50 : x
  2. Step 2: Convert to fraction form
    602.76/831.37 = 381.50/x
  3. Step 3: Cross multiply
    602.76x = 831.37 × 381.50
  4. Step 4: Simplify right side
    602.76x = 317,168.78
  5. Step 5: Solve for x
    x = 317,168.78/602.76
  6. Step 6: Final answer
    x = 526.19

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Find fourth proportional to 301.38, 415.68 and 190.75
Half scale
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Double scale
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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.