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Finding the Fourth Proportional to 495, 741.78 and 358.08

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Solution

The fourth proportional to 495, 741.78 and 358.08 is: 536.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    495 : 741.78 = 358.08 : x
  2. Step 2: Convert to fraction form
    495/741.78 = 358.08/x
  3. Step 3: Cross multiply
    495x = 741.78 × 358.08
  4. Step 4: Simplify right side
    495x = 265,616.58
  5. Step 5: Solve for x
    x = 265,616.58/495
  6. Step 6: Final answer
    x = 536.60

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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.