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Finding the Fourth Proportional to 907.49, 1,360.55 and 614.27

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Solution

The fourth proportional to 907.49, 1,360.55 and 614.27 is: 920.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    907.49 : 1,360.55 = 614.27 : x
  2. Step 2: Convert to fraction form
    907.49/1,360.55 = 614.27/x
  3. Step 3: Cross multiply
    907.49x = 1,360.55 × 614.27
  4. Step 4: Simplify right side
    907.49x = 835,749.99
  5. Step 5: Solve for x
    x = 835,749.99/907.49
  6. Step 6: Final answer
    x = 920.94

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.