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Finding the Fourth Proportional to 506.92, 701.04 and 485.20

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Solution

The fourth proportional to 506.92, 701.04 and 485.20 is: 671.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    506.92 : 701.04 = 485.20 : x
  2. Step 2: Convert to fraction form
    506.92/701.04 = 485.20/x
  3. Step 3: Cross multiply
    506.92x = 701.04 × 485.20
  4. Step 4: Simplify right side
    506.92x = 340,144.61
  5. Step 5: Solve for x
    x = 340,144.61/506.92
  6. Step 6: Final answer
    x = 671.00

Related Problems

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Half scale
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Double scale
Find fourth proportional to 507.92, 702.42 and 486.20
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.