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Finding the Fourth Proportional to 557.50, 835.44 and 313.69

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Solution

The fourth proportional to 557.50, 835.44 and 313.69 is: 470.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.50 : 835.44 = 313.69 : x
  2. Step 2: Convert to fraction form
    557.50/835.44 = 313.69/x
  3. Step 3: Cross multiply
    557.50x = 835.44 × 313.69
  4. Step 4: Simplify right side
    557.50x = 262,069.17
  5. Step 5: Solve for x
    x = 262,069.17/557.50
  6. Step 6: Final answer
    x = 470.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.