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Finding the Fourth Proportional to 914.74, 1,262.34 and 495.09

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Solution

The fourth proportional to 914.74, 1,262.34 and 495.09 is: 683.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    914.74 : 1,262.34 = 495.09 : x
  2. Step 2: Convert to fraction form
    914.74/1,262.34 = 495.09/x
  3. Step 3: Cross multiply
    914.74x = 1,262.34 × 495.09
  4. Step 4: Simplify right side
    914.74x = 624,966.97
  5. Step 5: Solve for x
    x = 624,966.97/914.74
  6. Step 6: Final answer
    x = 683.22

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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.