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Finding the Fourth Proportional to 724.77, 999.95 and 410.01

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Solution

The fourth proportional to 724.77, 999.95 and 410.01 is: 565.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    724.77 : 999.95 = 410.01 : x
  2. Step 2: Convert to fraction form
    724.77/999.95 = 410.01/x
  3. Step 3: Cross multiply
    724.77x = 999.95 × 410.01
  4. Step 4: Simplify right side
    724.77x = 409,982.45
  5. Step 5: Solve for x
    x = 409,982.45/724.77
  6. Step 6: Final answer
    x = 565.67

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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.