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Finding the Fourth Proportional to 642.77, 887.00 and 362.99

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Solution

The fourth proportional to 642.77, 887.00 and 362.99 is: 500.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    642.77 : 887.00 = 362.99 : x
  2. Step 2: Convert to fraction form
    642.77/887.00 = 362.99/x
  3. Step 3: Cross multiply
    642.77x = 887.00 × 362.99
  4. Step 4: Simplify right side
    642.77x = 321,975.25
  5. Step 5: Solve for x
    x = 321,975.25/642.77
  6. Step 6: Final answer
    x = 500.92

Related Problems

Find fourth proportional to 321.38, 443.50 and 181.50
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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.