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Finding the Fourth Proportional to 669.77, 924.77 and 483.67

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Solution

The fourth proportional to 669.77, 924.77 and 483.67 is: 667.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.77 : 924.77 = 483.67 : x
  2. Step 2: Convert to fraction form
    669.77/924.77 = 483.67/x
  3. Step 3: Cross multiply
    669.77x = 924.77 × 483.67
  4. Step 4: Simplify right side
    669.77x = 447,283.51
  5. Step 5: Solve for x
    x = 447,283.51/669.77
  6. Step 6: Final answer
    x = 667.82

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Double scale
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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.