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Finding the Fourth Proportional to 613.76, 919.42 and 370.16

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Solution

The fourth proportional to 613.76, 919.42 and 370.16 is: 554.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.76 : 919.42 = 370.16 : x
  2. Step 2: Convert to fraction form
    613.76/919.42 = 370.16/x
  3. Step 3: Cross multiply
    613.76x = 919.42 × 370.16
  4. Step 4: Simplify right side
    613.76x = 340,332.51
  5. Step 5: Solve for x
    x = 340,332.51/613.76
  6. Step 6: Final answer
    x = 554.50

Related Problems

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Half scale
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Double scale
Find fourth proportional to 614.76, 920.92 and 371.16
Similar ratio
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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.