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Finding the Fourth Proportional to 715.20, 1,068.26 and 570.48

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Solution

The fourth proportional to 715.20, 1,068.26 and 570.48 is: 852.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    715.20 : 1,068.26 = 570.48 : x
  2. Step 2: Convert to fraction form
    715.20/1,068.26 = 570.48/x
  3. Step 3: Cross multiply
    715.20x = 1,068.26 × 570.48
  4. Step 4: Simplify right side
    715.20x = 609,420.96
  5. Step 5: Solve for x
    x = 609,420.96/715.20
  6. Step 6: Final answer
    x = 852.10

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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.