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Finding the Fourth Proportional to 669.86, 924.45 and 580.67

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Solution

The fourth proportional to 669.86, 924.45 and 580.67 is: 801.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.86 : 924.45 = 580.67 : x
  2. Step 2: Convert to fraction form
    669.86/924.45 = 580.67/x
  3. Step 3: Cross multiply
    669.86x = 924.45 × 580.67
  4. Step 4: Simplify right side
    669.86x = 536,800.38
  5. Step 5: Solve for x
    x = 536,800.38/669.86
  6. Step 6: Final answer
    x = 801.36

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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.