Home / 1,021.02-1,529.65-558.10

Finding the Fourth Proportional to 1,021.02, 1,529.65 and 558.10

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Solution

The fourth proportional to 1,021.02, 1,529.65 and 558.10 is: 836.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021.02 : 1,529.65 = 558.10 : x
  2. Step 2: Convert to fraction form
    1,021.02/1,529.65 = 558.10/x
  3. Step 3: Cross multiply
    1,021.02x = 1,529.65 × 558.10
  4. Step 4: Simplify right side
    1,021.02x = 853,697.67
  5. Step 5: Solve for x
    x = 853,697.67/1,021.02
  6. Step 6: Final answer
    x = 836.12

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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.