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Finding the Fourth Proportional to 560.76, 773.91 and 403.35

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Solution

The fourth proportional to 560.76, 773.91 and 403.35 is: 556.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.76 : 773.91 = 403.35 : x
  2. Step 2: Convert to fraction form
    560.76/773.91 = 403.35/x
  3. Step 3: Cross multiply
    560.76x = 773.91 × 403.35
  4. Step 4: Simplify right side
    560.76x = 312,156.60
  5. Step 5: Solve for x
    x = 312,156.60/560.76
  6. Step 6: Final answer
    x = 556.67

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Find fourth proportional to 280.38, 386.96 and 201.68
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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.