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Finding the Fourth Proportional to 603.63, 904.75 and 278.32

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Solution

The fourth proportional to 603.63, 904.75 and 278.32 is: 417.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.63 : 904.75 = 278.32 : x
  2. Step 2: Convert to fraction form
    603.63/904.75 = 278.32/x
  3. Step 3: Cross multiply
    603.63x = 904.75 × 278.32
  4. Step 4: Simplify right side
    603.63x = 251,810.02
  5. Step 5: Solve for x
    x = 251,810.02/603.63
  6. Step 6: Final answer
    x = 417.16

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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.