Home / 1,590.02-2,384.40-479.09

Finding the Fourth Proportional to 1,590.02, 2,384.40 and 479.09

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Solution

The fourth proportional to 1,590.02, 2,384.40 and 479.09 is: 718.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,590.02 : 2,384.40 = 479.09 : x
  2. Step 2: Convert to fraction form
    1,590.02/2,384.40 = 479.09/x
  3. Step 3: Cross multiply
    1,590.02x = 2,384.40 × 479.09
  4. Step 4: Simplify right side
    1,590.02x = 1,142,341.23
  5. Step 5: Solve for x
    x = 1,142,341.23/1,590.02
  6. Step 6: Final answer
    x = 718.45

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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.