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Finding the Fourth Proportional to 719.81, 993.42 and 530.83

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Solution

The fourth proportional to 719.81, 993.42 and 530.83 is: 732.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    719.81 : 993.42 = 530.83 : x
  2. Step 2: Convert to fraction form
    719.81/993.42 = 530.83/x
  3. Step 3: Cross multiply
    719.81x = 993.42 × 530.83
  4. Step 4: Simplify right side
    719.81x = 527,329.52
  5. Step 5: Solve for x
    x = 527,329.52/719.81
  6. Step 6: Final answer
    x = 732.60

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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.