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Finding the Fourth Proportional to 560, 835.72 and 490.76

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Solution

The fourth proportional to 560, 835.72 and 490.76 is: 732.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    560 : 835.72 = 490.76 : x
  2. Step 2: Convert to fraction form
    560/835.72 = 490.76/x
  3. Step 3: Cross multiply
    560x = 835.72 × 490.76
  4. Step 4: Simplify right side
    560x = 410,137.95
  5. Step 5: Solve for x
    x = 410,137.95/560
  6. Step 6: Final answer
    x = 732.39

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.