Home / 1,455.18-2,181.82-530.56

Finding the Fourth Proportional to 1,455.18, 2,181.82 and 530.56

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Solution

The fourth proportional to 1,455.18, 2,181.82 and 530.56 is: 795.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,455.18 : 2,181.82 = 530.56 : x
  2. Step 2: Convert to fraction form
    1,455.18/2,181.82 = 530.56/x
  3. Step 3: Cross multiply
    1,455.18x = 2,181.82 × 530.56
  4. Step 4: Simplify right side
    1,455.18x = 1,157,586.42
  5. Step 5: Solve for x
    x = 1,157,586.42/1,455.18
  6. Step 6: Final answer
    x = 795.49

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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.