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Finding the Fourth Proportional to 1,455.80, 2,183.02 and 530.72

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Solution

The fourth proportional to 1,455.80, 2,183.02 and 530.72 is: 795.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,455.80 : 2,183.02 = 530.72 : x
  2. Step 2: Convert to fraction form
    1,455.80/2,183.02 = 530.72/x
  3. Step 3: Cross multiply
    1,455.80x = 2,183.02 × 530.72
  4. Step 4: Simplify right side
    1,455.80x = 1,158,572.37
  5. Step 5: Solve for x
    x = 1,158,572.37/1,455.80
  6. Step 6: Final answer
    x = 795.83

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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.