Home / 1,455.20-2,181.52-530.59

Finding the Fourth Proportional to 1,455.20, 2,181.52 and 530.59

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Solution

The fourth proportional to 1,455.20, 2,181.52 and 530.59 is: 795.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,455.20 : 2,181.52 = 530.59 : x
  2. Step 2: Convert to fraction form
    1,455.20/2,181.52 = 530.59/x
  3. Step 3: Cross multiply
    1,455.20x = 2,181.52 × 530.59
  4. Step 4: Simplify right side
    1,455.20x = 1,157,492.70
  5. Step 5: Solve for x
    x = 1,157,492.70/1,455.20
  6. Step 6: Final answer
    x = 795.42

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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.