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Finding the Fourth Proportional to 621.02, 856.95 and 341.19

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Solution

The fourth proportional to 621.02, 856.95 and 341.19 is: 470.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.02 : 856.95 = 341.19 : x
  2. Step 2: Convert to fraction form
    621.02/856.95 = 341.19/x
  3. Step 3: Cross multiply
    621.02x = 856.95 × 341.19
  4. Step 4: Simplify right side
    621.02x = 292,382.77
  5. Step 5: Solve for x
    x = 292,382.77/621.02
  6. Step 6: Final answer
    x = 470.81

Related Problems

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Half scale
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Double scale
Find fourth proportional to 622.02, 858.33 and 342.19
Similar ratio
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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.