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Finding the Fourth Proportional to 602.14, 831.36 and 381.22

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Solution

The fourth proportional to 602.14, 831.36 and 381.22 is: 526.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.14 : 831.36 = 381.22 : x
  2. Step 2: Convert to fraction form
    602.14/831.36 = 381.22/x
  3. Step 3: Cross multiply
    602.14x = 831.36 × 381.22
  4. Step 4: Simplify right side
    602.14x = 316,931.06
  5. Step 5: Solve for x
    x = 316,931.06/602.14
  6. Step 6: Final answer
    x = 526.34

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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.