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Finding the Fourth Proportional to 670.99, 926.15 and 471.86

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Solution

The fourth proportional to 670.99, 926.15 and 471.86 is: 651.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.99 : 926.15 = 471.86 : x
  2. Step 2: Convert to fraction form
    670.99/926.15 = 471.86/x
  3. Step 3: Cross multiply
    670.99x = 926.15 × 471.86
  4. Step 4: Simplify right side
    670.99x = 437,013.10
  5. Step 5: Solve for x
    x = 437,013.10/670.99
  6. Step 6: Final answer
    x = 651.30

Related Problems

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Half scale
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Double scale
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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.