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Finding the Fourth Proportional to 529.00, 729.71 and 307.90

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Solution

The fourth proportional to 529.00, 729.71 and 307.90 is: 424.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.00 : 729.71 = 307.90 : x
  2. Step 2: Convert to fraction form
    529.00/729.71 = 307.90/x
  3. Step 3: Cross multiply
    529.00x = 729.71 × 307.90
  4. Step 4: Simplify right side
    529.00x = 224,678.24
  5. Step 5: Solve for x
    x = 224,678.24/529.00
  6. Step 6: Final answer
    x = 424.72

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