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Finding the Fourth Proportional to 719.95, 1,077.48 and 536.89

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Solution

The fourth proportional to 719.95, 1,077.48 and 536.89 is: 803.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    719.95 : 1,077.48 = 536.89 : x
  2. Step 2: Convert to fraction form
    719.95/1,077.48 = 536.89/x
  3. Step 3: Cross multiply
    719.95x = 1,077.48 × 536.89
  4. Step 4: Simplify right side
    719.95x = 578,488.24
  5. Step 5: Solve for x
    x = 578,488.24/719.95
  6. Step 6: Final answer
    x = 803.51

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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.